The correct answer is C. profit sharing.
Cost accounting is a branch of accounting that deals with the identification, measurement, accumulation, analysis, and reporting of costs. It is used by managers to make decisions about pricing, product mix, and production levels.
Planning is the process of setting goals and objectives and developing strategies to achieve them. Controlling is the process of monitoring performance and taking corrective action when necessary. Product costing is the process of determining the costs associated with producing a product.
Profit sharing is a system in which employees share in the profits of the company. It is a form of incentive compensation that is designed to motivate employees to improve performance.
While profit sharing can be a useful tool for motivating employees, it is not a cost accounting concept. Cost accounting is concerned with the costs of products and services, not with the profits of the company.